Face mask cushion



FIG. 1 is a top, front, and left side perspective view of a face mask cushion;

FIG. 2 is a top, rear, and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dashed broken lines in the figures are used to illustrate portions of the face mask cushion that form no part of the claimed design. 

CLAIM The ornamental design for a face mask cushion, as shown and described. 